Triple

T398901
Position Surface form Disambiguated ID Type / Status
Subject Pittsburgh, Cincinnati, Chicago and St. Louis Railroad E9234 entity
Predicate formedByMergerOf P77 FINISHED
Object Columbus, Chicago and Indiana Central Railway
The Columbus, Chicago and Indiana Central Railway was a 19th-century Midwestern railroad whose lines later became part of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad system.
E9234 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Columbus, Chicago and Indiana Central Railway | Statement: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, formedByMergerOf, Columbus, Chicago and Indiana Central Railway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Columbus, Chicago and Indiana Central Railway
Context triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, formedByMergerOf, Columbus, Chicago and Indiana Central Railway]
  • A. Chicago Railways Company
    The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
  • B. Pittsburgh, Cincinnati, Chicago and St. Louis Railroad
    The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad was a major Midwestern and Mid-Atlantic rail system that formed a key part of the Pennsylvania Railroad’s network, linking important industrial cities across the region.
  • C. Calumet and South Chicago Railway Company
    The Calumet and South Chicago Railway Company was a street railway operator that provided transit services in Chicago’s South Side and surrounding industrial areas in the early 20th century.
  • D. Northern Central Railway
    Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
  • E. Missouri Pacific Railroad
    Missouri Pacific Railroad was a major American Class I railroad that operated across the Midwestern and Southwestern United States, playing a key role in regional freight and passenger transportation before its merger into the Union Pacific system.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Columbus, Chicago and Indiana Central Railway
Triple: [Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, formedByMergerOf, Columbus, Chicago and Indiana Central Railway]
Generated description
The Columbus, Chicago and Indiana Central Railway was a 19th-century Midwestern railroad whose lines later became part of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Columbus, Chicago and Indiana Central Railway
Target entity description: The Columbus, Chicago and Indiana Central Railway was a 19th-century Midwestern railroad whose lines later became part of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad system.
  • A. Chicago Railways Company
    The Chicago Railways Company was a major early 20th-century street railway operator in Chicago that formed a key part of the city’s urban transit system before consolidation into unified public transportation.
  • B. Pittsburgh, Cincinnati, Chicago and St. Louis Railroad chosen
    The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad was a major Midwestern and Mid-Atlantic rail system that formed a key part of the Pennsylvania Railroad’s network, linking important industrial cities across the region.
  • C. Calumet and South Chicago Railway Company
    The Calumet and South Chicago Railway Company was a street railway operator that provided transit services in Chicago’s South Side and surrounding industrial areas in the early 20th century.
  • D. Northern Central Railway
    Northern Central Railway was a historic American railroad that operated primarily in Pennsylvania and Maryland, serving as an important north–south link in the 19th and early 20th centuries.
  • E. Missouri Pacific Railroad
    Missouri Pacific Railroad was a major American Class I railroad that operated across the Midwestern and Southwestern United States, playing a key role in regional freight and passenger transportation before its merger into the Union Pacific system.
  • F. None of above.

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69a2e8004cb88190b92ed1add6abf41a completed Feb. 28, 2026, 1:05 p.m.
NER Named-entity recognition batch_69a2ec8d0ca881909d786e8eed9b6748 completed Feb. 28, 2026, 1:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69a42a12e5548190aedc6e18ef24c0ce completed March 1, 2026, 11:59 a.m.
NEDg Description generation batch_69a42dcefe4c8190a2ca6d5bc501c3b8 completed March 1, 2026, 12:15 p.m.
NED2 Entity disambiguation (via description) batch_69a42e24eca08190ad47f69d8d0743d0 completed March 1, 2026, 12:16 p.m.
Created at: Feb. 28, 2026, 1:08 p.m.